ICM_GETDEFAULTKEYFRAMERATE

The ICM_GETDEFAULTKEYFRAMERATE message queries a video compression driver for its default (or preferred) key-frame spacing. You can send this message explicitly or by using the ICGetDefaultKeyFrameRate macro.

ICM_GETDEFAULTKEYFRAMERATE 
wParam = (DWORD) (LPVOID) &dwICValue; 
lParam = 0; 
 

Parameters

dwICValue

Address to contain the preferred key-frame spacing.

Return Values

Returns ICERR_OK if the driver supports this message or ICERR_UNSUPPORTED otherwise.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in vfw.h.

See Also

Video Compression Manager Overview, Video Compression Messages, ICGetDefaultKeyFrameRate